Center locating device



April 18, 1933.l H, KIECKHEAFER 1,904,242

CENTER LOCATIING4 DEVICE Filed Nov. 4, 1929 fg W Z5 is 90 @Y @myPatented Apr. 18, 1933 i HENRY r. xIEcxnnArEn, or HAMMOND, INDIANACENTER LVOGATING- DEVICE Application filed November 4, 1929.'k SerialNof 404,710. l

This invention relates to certain novel improvements in a center'locating'k device and has for its principal object the provision of animprovedconstruction of this character 5 which will be highly efficientin use and economical in manufacture.

- The salientobject of my' invention is to pro-'p vide a'device of theabove named character so .I vconstructed that it vmay be yemployed for 1locatingv the center'on round stock such as is operated 'onV in lathesand other analogous turning machines. f

Another object ofthe invention isto prol vide a device of the abovevdescribed character which will beparticularly' adapted for use inconnection with so called round stock and asis well understood Vin theart this stock is supplied in 'standard sizes' and I, therefore, providean arrangement which will permit the' employment of my device inconnection 'with stock of various sizes. Y

A still further object of the invention'is to provide a device of theabove described character which will embody a movable mem- 5 Vberandwhich will have portions for locking sections of the movable memberin a predetermined position relative to a ymarking member.l Y

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangement of partstov be hereinafter described and claimed.

The invention will'bebest understood by reference to the accompanyingdrawing, showing the preferred' form of 'construction andinwhich: j y '1Fig. `1 is an elevational'viewrdepicting a preferred form ofconstructionfor my invention in operating position;

Fig.AY 2 is nan elevational view looking in at Jlie bottom vside of mydevice as depicted in Figi-Slis a view flocking in direction fromFig.2'; l

the' opposite Fig. 4 is aV sectional 'view taken substantiallyon theline 4--4 on F ig. 3; and I a Figfis a view taken substantially on theline5 -5fon Fig-4. Y f. (In theI accompanying drawing wherein I 59 haveillustrated a preferred form of construction for my invention 10generically indicates themain body portion of my limproved to'ol. Thismain body portionjincludes` a substantially circular head portion 1'1from which a handle portion 12 is extend- 55 ed, the handle portion 12being substantially vcircular in cross 'section and preferably beingknurled as indicated at 13 to facilitate proper gripping thereof. i Onthe upper 11, as viewed in Fig. l, I provide a boss 14 which has aportion thereof disposedat the cen-ter of the head portion andwhchincludes portions vthateXtend radially from,

vthe center infdiametrical opposition from 65 the extent of the handle12and this is' clearly illustrated in Fig. 4. Extending throughsubstantially the. midpoint of the circular head Y11 and through theboss 14 is a tapped opening 15. Y

The movable member of my improved de-l vice is generically lindicated by16` and, ,as

best illustrated-in Fig. 2, this member 16 is circular in outline and is`equal in diameter to the'head 11. Extending through the mem- 75 ber 16at the midpoint thereof is a bore 17. Asleeve `18 is arranged in thebore 17 and a bolt 19 is passed through the sleeve 18 and a screwthreadedly fitted into the `opening 15,..

1a washer 2O being disposed intermediate the 80 head 21 of the bolt 19and. the face of the member 16. In this manner the member 16 issupported on the head 11 for rotative movement. n Y y i .Y

'In the'periphery of the member 16 at 85 spaced kapart intervalssemi-'circular recesses 22 are provided. These semi-circularl vreecesses `are of vdifferent diameters corresponding to the diameters ofstandard round stock such'as used in lathes and other turning ma- 90ychines.

The'centers ofthe semicircular recesses are disposed on thecircumference of the member 16 and the head 11." If desired suitableindicia indicated by 23 may be' provided in associationy with each ofthe recesses 95 22 to indicatethe size of these recesses.

A circular opening 24 is provided at substantially the point of juncturebetweenthe handle 12 and the head 11 .andthe center line of rthisopening 24 passes through the cir- 100 face iof the circular portion '30cumference of the member 16 for a purpose to be set forth presently. Inthe opening 24 a rib 25 is provided in which rib there is an opening 26.A plunger 27 has a head 28 which is substantially conical and which hasthe apex thereof extended. toward the face of the head 11 to which themember 16 is secured and this head 28 is disposed on one side of the rib25. The plunger 27 has at the end thereof opposite the head 28 anenlarged head portion 29 and a reduced collar 30 is arrangedintermediate the enlarged head portion 29 of the plunger 27. A coilspring 31 is disposed around the plunger 27 between the collar 30 andthe rib 25and actsto retain the head 28 within the opening 24.

1n the member 16 on the facethereof disposed toward the head 11 aplurality of drilled openings 32 are provided. Each of the drilledopenings 32 lies on a diametrical line drawn through the center of oneof the recesses 22 and the center of the opening 17 and it is,therefore, manifest that for each ofthe recesses 22 there will be adiametrically disposed opening 32. The recesses 32 are disposed inVcircular formation about the opening 17. Y

A recess 33 extends into the boss 14 and the head 11 toward the faceofthe head'11 to which the member 16 is secured and an opening 34extends between this recess 33 and said face of the member 11. A pin 35is provided which is secured to a head 36 that is disposed in the recess33. A stem 37 extends from the head 36 in a direction opposite to thepin 35 and is connected to a. collar portion 38 exteriorly of whichthere is an enlarged head portion 39. The stem 37 is extended through acollar 40 that is retained at the outer end of the recess 33 by thescrew or other analogous securing device 41. A coil spring 42 isdisposed about the` stem 37 between the head 36 and the collar 40. Thespring 42 acts on the head 36 to normally force the pin 35 outwardlythrough the opening 34. The radius of the circle on which the openings32 are disposed is equal to the distance between the center of thetapped opening 15 and the center of the recess 33 Vand it is, therefore,manifest that the pin 35 may be selectively disposed in one of theopenings 32.

To facilitate constructiomin the present instance, I have shown thehandle 12, as being comprised vof two portions, one of which is the boss43 that extends from the head 11. The boss 43 has at the outerl endthereof a tapped opening 44 into which the threaded stud 45k on the endofthe handle member proper 46 is fitted but it is to be understood thatthe handle 12 might be made from one piece without deparating from thepurview of my invention. The portion of the boss 43 known hereinafter asthe abutment surface 47 is selected. This stock will be of a knowndiameter and in the present instance the stock 48 is of a diameter ofone and o-ne-fourth inches. The recess 22 corresponding to this diameteris moved into fa, position in alignment with the abutment surface 47 andthe pin 35 is inserted into the opening 32 that is in diametri-calopposition to this selected recess 22. VThe stock 48 is then clamped ina vise 49 of standard construction in the manner illustrated in Fig. 1wherein it will be seen that the stock 48 projects vertically fro-m thevise 49. My improved tool is then' gripped by the handle 12 and the endof the stock is disposed in engagement with theabutment surface 47 andthe periphery of the stock 48 is engaged with the edge of the selectedre- 'A cess 22. Since this selected recess 22 has a radius equal lto theradius of the stock 48, and since the center from which the recess 22 isdefined lies on the circumference of the member 16, and since the apexof the conical head 28 is disposed on the center line ofthe opening 24,which center line passes through the circumference of the member 16, itis manifest that, whenv a blow is struck on the head portion 29, theconical member 28 will be forced outwardly against the action of thespring 31 and the apex thereof will be forced into thegcenter of thestock 48 on the end and it is, therefore, manifest that the center willbe marked on the other end of the stock which will greatly facilitatethe centering of the stock in a lathe or other analogous turning device.

In order to position another recess 22 in alignment with the abutmentsurface 47 the head portion 39 is gripped and the pin 35" will,therefore,vbe retracted from the recess 32 in which it is disposed,VThis willpermit the member 16 to be rotated relative 'to the i" headmember 11 and when theselected recess 22 comes into alignment with theabutment 1n use, a section of stock indicated by 48 surface 47 the pin35 will enterthe opening 32 that will have been moved into the abovedescribed diametrically opposed position.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, lthis is'capable ofvariation and modification, without departing from the spirit oftheinvention. I, there-E fore, do not wish to'be limited tothe precisedetails of construction set forth, but desire to avail myself of suchvariations and modiications as come withinthe scope of the appendedclaim. Y x

Having thus described my invention what I claim as new and desire toprotect by Letters Patent is A center locating device comprising a cirlcular plate, a handle element extending therefrom, a disc rotatablymounted on said plate and having a pluralityof recesses of differentradii formed therein arranged about its circumferential periphery, saiddisc having L radially arranged indentations on the face thereofcontiguous to the plate, a member slidably mounted in said plateand'selectively engageable in the indentations to hold the plate anddisc relatively immovable with respect to each other, and a punchingelement slidably mounted in the handle on the periphery of the disc andadapted to strike the center point in the end of round stock selectivelydisposed in one of said recesses.

v In testimony whereof I afliX my signature.

HENRY F. KIECKHEAFER.

